What is China’s population? How many different ethnic groups are there in China? Where do all these ethnic groups reside?

What is China’s population? How many different ethnic groups are there in China? Where do all these ethnic groups reside?

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China is the MOST populous country in the world with a population of 1.3 Billion People. China has 56 ethnics, but “Han” make up 94% of the population.
I’m not particularly sure where all these ethnics reside, but I do know that Tibetans reside in Tibet, Uighurs reside in the XingJiang Province.
Many ethnic groups reside in the Yunnlan and Guangxi